Question

6 your spoon getting warm sitting in a cup of hot cocoa is an example of which type of heat transfer? 7 you roast marshmallows over a fire. what type of heat transfer is taking place? 8 laying on the beach getting a tan is an example of ____. 9 touching a burner on the hot stove is an example of ____.

Explanation:

• Question 6: Conduction is the transfer of heat through direct contact. The spoon (a solid) is in direct contact with the hot cocoa, so heat is transferred via conduction.
• Question 7: Radiation is the transfer of heat in the form of electromagnetic waves. When roasting marshmallows over a fire, heat from the fire (which emits infrared radiation) reaches the marshmallows without direct physical contact (air is a poor conductor and convection currents are less relevant here compared to the direct - wave transfer).
• Question 8: When getting a tan on the beach, the sun emits ultraviolet (a form of electromagnetic radiation) which causes the tanning effect. So it is radiation.
• Question 9: Touching a hot stove burner involves direct contact between the skin (or the object touching) and the hot surface. Heat is transferred through direct contact, which is conduction.

Answer:

1. Conduction
2. Radiation
3. Radiation
4. Conduction